Convert the following degree measure to radian measure. Show your work.

45°

To convert degrees to radians, you can use the formula: radians = degrees * (pi/180)

Using this formula, we can convert 45° to radians as follows:

45° * (pi/180) = (45/180)pi = 0.25pi

Therefore, the radian measure of 45° is 0.25pi radians.